1. LAL Status - based on inputs from W. Kaabi and A. Stocchi - cf
LAL Status - based on inputs from W. Kaabi and A. Stocchi - cf. report on RF couplers by W. Kaabi on 23/4
Philip Bambade
Laboratoire de l’Accélérateur Linéaire
Université Paris 11, Orsay, France
9th XFEL ACB meeting - DESY April 2015

2. Status of power couplers at LAL:
2014
420 Couplers
360 Couplers
+ 24 couplers delivered on 2013
 48 modules
2015

3. Status of power couplers at LAL:
After production stabilization: rejection rate: 8,7%
Before production stabilization: rejection rate: 19,4%
2015
2014
Weekly received Coupler
Calendar week

4. Reception and deliveries projections
1/2/2016
End of Thales-RI delivery
14/2/2016
2016
Coupler Number
Christmas break
2015
Assuming typical average rejection rates  15-20%
Calendar Week

5. Highlights at LAL - Acceleration of Thales-RI deliveries - Just started CPI production
Thales & RI has recently been delivering 8-10 couplers / week
Accelerated production (incentive based, 10/week) for 2 months
Rejection rate upon inspection presently < 10%
8 prototype CPI couplers, assembled and conditioned at SLAC, were sent to IRFU (transiting via LAL without inspection)  7 are mounted in XM26
4 first serial couplers received at LAL April 9  first RF processing attempt failed  a second baking was performed, RF conditioning to be done again next week  close communication and exchange LAL & DESY  CPI
4 next serial couplers expected to be delivered next week
From May, expect regular delivery of 4 couplers / week until January 2016
TBC: expect rejection rate of  10% from CPI after initial learning process
Hope to reach (need…) < 10% rejection rate from Thales & RI and CPI
Extend accelerated production if needed ?
Up to 14 couplers / week can be handled at LAL

6. Prospects for future involvement
RF couplers are a key component of the SCRF technology, but also a very highly specialized one
Strengthen and develop our position in this “niche” in view of other coming similar projects in the community
Diversify and extend our scope within XFEL:
Contribution to module testing @ AMTF
Commissioning and operation
Beam instrumentation and physics
 training & education
 synergies with a possible ILC, and others…

7. Status of power couplers at LAL:

8. Status of power couplers at LAL: